Door-control device for vehicles.



W. E. JOHNSON.

DOOR CONTROL DEVIOE EOE VEHICLES.

APPLICATION FILED 00T. 3.419132 v Patented A131221, 1914.

SHEETS-SHEET 1.

] l/we 141501 W. E. Jo'NsoN.

DOOR CONTROL DEVICE FCR VEHICLES.A

APPLICATION FILED OCT. 3. 1913. I

Patented Apr. 21, 1914 4 SHEETS-SHEET 2.

v 5 nfl/vento@ W. E. JOHNSON. DOOR CONTROL DEVICE FOR VEHICLES.

APPLIoATloN FILED 00T. s, 1913.

1,093,629. Patented Apr. 21, 191,4

W. E. JOHNSON.

DOOR CONTROL DEVICE FOP. VEHIOLBS.

APPLICATION FILED 00T. 3. 1913.

Patented A111221, 1914 4 SHEETS-SHEET 4.

4.I\I\J A71 llllllllr. |||II\ UNITED STATES 'PATENT OFFICE.I

WILNER E. JOHNSON, OF BROOKLYN, NEW YORK.

DOOR-CONTROL DEVICE FOR VEHICLES.

Specification of Letters Patent.

Patented Apr. 21, 1914.

Application led October 3, 1913. Serial No. 793,204.

utilize the platform space adjacent the doorenables the door-operating motor to shift the doors, is automatically cut off. Thus the car door is rendered dead until such time as the seat is removed from seating position, the lockingmeans being automatically released by the seat movement which si-` multaneously permits a supply of motive power to the door operating motor.

v Other and further objects will appear in the specification and be specifically pointed out in thc appended claims, reference being had to the accompanying drawings which exemplify my invention in its adaptation to a rapid transit vehicle provided with an air brake system.

In the drawings,-Figure 1 is ageneral diagram of one embodiment of my invention; Fig. 2 is a fragmentary top plan view of the door-locking device in locked position; Fig. 3 is a rear elevation of the same, parts being shown in section; Fig. 4 is a front elevation of a portion of Fig. 2 taken from the right of Fig. 2; Fig. 5 is a fragincntary side elevation of the operating connection between the seat and the motor operating circuit, parts being broken away and parts shown in section; Fig. 6 is a diagrammatic view 'of another embodiment of my invention; Fig. 7 is a. fragmentary rear elevation of portions shown in Fig. 6; Fig. 8 is a side elevation of the same. r

Referring first to the embodiment shown in Figs. 1 to 5 inclusive, the door 1 of the vehicle is adapted to be moved into and out of closed position with reference to a doorway, by means of a motor comprising in the present embodiment, a cylinder 2 within which is reciprocably mounted a piston 3. Said piston is provided with a piston rod 4 having an upwardly projecting portion 5 which is connected by'a rod 6 to the door 1. A supply pipe 7 which may be connected. upwith any suitable source of any suitable fluid pressure medium, is according to the present embodiment connected to a valve khousing 8, within which is mounted a valve (not shown) which may be turned by a handle 9 int-o either of two positions represented by full lines and dotted lines in Fig. 1. Leading from the valve housing 8 is a pipe 10 which is connected to a valve housing 1.1, said valve housing 11 being connected by a pipe- 12 with one end of the cylinder 2. The other end ofa the cylinder 2 is connected by a pipe 13 with another portion of the valve housing 11. Said other portion of the valve housing 11 is in turn connected by apipe 14 with the valve housing 8, which is adapted to exhaust into the atmosphere by a discharge pipe 15. While the passage of the Huid pressure medium through the valve housing 11 may be controlled either in that portion of the valvell which is interposed 'between pipes 10 and 12 or within that portion of said housing which -is interposed between the pipes 13 and 14, I preferably employ a valve which controls both portions of said valve housing simultaneously. For this purpose, a valve operating arm 16 (see Fig. 5) is secured to the valve rod 17, said arm 16 being provided with a slot 18, within which reciprocates a pin 19, which is carried by a projection or bracket 20 which is rigidly secured to the seat 21. Said seat 21 is preferably mounted by trunnions 22 within suitable brackets 23, one of said brackets being mounted upon one wall 24 of the door housing. Reciprocably mounted within the wall or partition W1, is a locking Ibolt 25 which is provided on its inner end with an enlarged' rounded end 26 to adapt it to be engaged by a cam surface 27 which is formed in a cam bracket 28 which is rigidly mounted upon the seat 21.

By 'an inspection of Figs. 2, 3 and4, it will be understood that when the seat 21 is down in seating position as shown in these figures, the cam surface 27 will force the lbolt into locking position to positively bar the door 1 .(see Fig. 2) from being shifted to I l the left accordingto said ligure. Furtherl ferring now to the embodiment shown in Figs. 6, 7 and 8, the pipes 12 and 13 are connected to a common valve housing 29 which may be connected up with the air brake system of the vehicle, said air brake system not being represented on the drawings. lWithin the common housing 29 is a double valve (not shown), which is adapted to control the flow of fluid pressure medium through the `pipes 12 and 13 in suchI a mar.- ner as to alternately drive the piston `3 -to and fro for opening or closing the door 1 as the case may be. Surmountlng the housing 29 is another housing 30 within which a solenoid (not shown) `is suitably arranged to operate the double valve referred to above, said solenoid being grounded by a wire 31.

Current from a line wire 32 may be supplied by a wire 33 leading to a contact 34, which is spaced from another contact 35, the space between said contacts being bridged when desired by an armature 36. Contact 35 is connected by a wire 37 with one of a pair of spacedcontacts 38, the other of said contacts 38 being connected by a wire 39 with the solenoid within housing 30. Accordingto this embodiment of my invention, the seat 21 is provided with a resilient contact 40 which is adapted to bridge the space between contacts 38 when the seat 21 is in raised position representedby the full lines in Figs. 7 and 8 but which prevents the energizing of the solenoid in housin 30 when the seat is in lowered position and 1n use.

The operation of my improved devicewill now be readily understood and brieflydescribed is as follows: When the handle 9 is moved into the position shown in full lines in Fig. 1, motive iiuid such as compressed air, is admitted through supply pipe 7 into the pipe 10 and if the seat 21 be 1n raised position, said iiuid will pass through the housing 11 into pipe 12 and thence into cylindery 2. Immediately the piston 3 is moved to the right end of the cylinder 2 and the door thrown into open position shown in full lines in Fig. 1. Any air or Huid which may remain in the cylinder 2 to the rightof piston 3, is displaced through the pipe 13, lower portion of housing 11, pipe 14, and exhaust pipe 15.4 When 1t is desired to close the door, the handle 9 is thrown into dotted line position shown in Fig. 1, whereupon the motiveiuidvis admitted to pipe. 14 from the suppl pipe 7, passing in a reverse direction into the, right end of'cylinder 2 and forcing piston 3 tothe left. During this operation the lfluid in the left end of said cylinder is displaced through pipe 12, housing 11, pi e l0 and exhaust pipe 15. If, however,t e seat 21 is in lowered or seating position, the bolt 25 will be projected into locking position as shown in Figs. 2 and 4. Furthermore, the valve arm 16 will be thrown into dotted line positionv shown in Fig. 5, in which position the iow of fluid is prevented lthrough both portions of the housing 11.

In consequence, not only is the door barred against being opened but the motive power for effecting the opening movement is automatically cut ofi'. A,

In the modification shown in Figs. 6, 7, and 8, whenever the seat 21 i's in raised position indicated in dotted lines in Fig. 1 and in full lines in Figs. 7 and 8, the door-locking bolt 26 is in retracted position (see Fig. 7). In consequence the door 1 is free to be moved and if the plate 36 is made to bridge the space between contacts 34 and 35, the solenoid within housing 30 is energized by the circuit including feed wire 32, wire 33, contacts 34, 35, and 36, wire 37, contacts 38 and 40, wire 39, and ground wire 31. When this occurs, the fluid pressure medium is caused to ow into one end of the cylinder 2 and out of the other end thereof, the door 1 being thus opened or closed as the case may be. p

What I claim is:

1. In a vehicle, the combination with a door, of operating means therefor, a seat movable into and out of seating position adjacent said door, and means operated by said seat for controlling the operation of said door-operating means.

2. In a vehicle, the combination with a door, of operating means therefor, a seat movable into and out of seating osition adjacent said door, means operatedby said seat for controlling the operation of said dooroperating means, and lookin means for said door adapted to be operatedy said seat.

3. In a vehicle, the combination ofa door, a motor for said door, means for controlling the operation of said door motor, and a movable seat adapted to actuate said motor con, trolling means.

4. In a vehicle, the combination of a door, a motor for said door, a seat movable into and out of seating position adjacent said door, and means operated by said seat for rendering said door motor operative and inoperative successively.

5. In a vehicle provided with a doorway, a door for said doorway, means for operating said door, a seat movable into and out of seating position adjacent said doorway, and an operative connection between said dooroperating means and said seat, said door-operatin means being adapted to be rendered operative and inoperative successively by said operating connection when the seat is shifted in posltion. 4

6. In a vehicle provided with a doorway,

the combination of a door for said doorway, a motor for moving said door, means for locking said door, and a movable seat adapted to control said door-operating motor and said door-locking means.

7. In a vehicle provided with a doorway,

' the combination of a door for said doorway,

a motor for moving said door into and out of position closing said doorway, a seat movable into and out of seating position adjacent said doorway, and means for controlling the flow of motive luid through saiddoor-operating motor, said means being operably connected to said seat.

8. In a vehicle provided with a doorway, a door for said doorway, a motor for imparting the openin and closing movements to said door, an in et valve for said motor, and a seat movable into and out of seating position adjacent said doorway, said seat being suitably connected to s aid valve tocontrol the operation of said door-motor to correspond to the position of said seat.

9. In a vehicle provided with a doorway, a door for said doorway, a motor for imparting the opening and closing movements to said door, an outlet valve for said motor, and a seat movable into and out of seating osition adjacent said doorway, said seat be.

ing suitably connected to said valve to control the operation of said door-motor.

10. In a vehicle provided with a doorway,

a door for said doorway, a motor for imparting the opening and closing movements to said door, a combined inlet and outlet valve for said motor, and a seat movable into and out ot' seating position adjacent said doorway, said seat belng suitably connected 'to said valve to control the operation of said'door-motor.

11. In a vehicle provided with a doorway a door for said doorway, a motor for sald door, a pipe for motive fluid leading to said motor, a discharge pipe leading therefrom, a. valve 1n one 'of said pipes, a 'seat movable into and out of seating position adjacent said doorway, and means for connecting said valve to said seat.

12. In a vehicle provided with a doorway, a' door for said doorway, a motor for said door, a pipe for motive fluid leading to said motor, a discharge pipe leading therefrom, a valve in each of said pipes, a seat movable into and out of seating position adjacent said doorway, and valve operating means connected to said seat.

13. In a vehicle provided with a doorway, a door for said doorway, a motor for operating said door, means for operatin said motor, including a controlling mem er, a seat movable into and out of seating position adjacent said doorway, and means for transmitting motion from said seat to said controlling member.

14. In a vehicle provided with a doorway, a door for said doorway, a uid pressure motor for operating said door, means for controlling the inlet -of fluid to said motor and outlet of fluid there-from, a seat movable into and out of seating position adjacent said doorway, and means for connecting said seat to said Huid-inlet and outlet controlling means.

15. In a vehicle provided with a doorway, the combination of a door for said doorway, a compressed air motor connected to said door for moving the same into and out of closed position, an air-control valve connected to said motor, a seat movable into and out of seating position adjacent said doorway, and a valve-operating arm connected to said seat.

WILNER E. JOHNSON. Witnesses:

WM. A. COURTLAND, A. O. KNIGHT. 

